The Influence of Channel Depth on the Performance of a Micro-Separator/Classifier

DOI Web Site Web Site 2 Citations 13 References
  • OOKAWARA Shinichi
    Department of Chemical Engineering, Graduate School of Science and Engineering, Tokyo Institute of Technology
  • HIGASHI Ryochi
    Department of Chemical Engineering, Graduate School of Science and Engineering, Tokyo Institute of Technology
  • STREET David
    Fluent Asia Pacific Co., Ltd.
  • OGAWA Kohei
    Department of Chemical Engineering, Graduate School of Science and Engineering, Tokyo Institute of Technology

Bibliographic Information

Other Title
  • 「マイクロ化学工学」マイクロチャンネル分離分級器の性能に対する流路深さの影響
  • マイクロチャンネル分離分級器の性能に対する流路深さの影響
  • マイクロチャンネル ブンリ ブンキュウキ ノ セイノウ ニ タイスル リュウロ フカサ ノ エイキョウ

Search this article

Abstract

The influence of channel depth on the performance of a micro-separator/classifier (Ookawara et al., 2003), whose main section is a curved microchannel with a rectangular cross section, was studied experimentally and numerically. The width of the examined microchannel was 400 μm and the depths of three models (400a, 400b and 400c) were 250 μm, 170 μm and 100 μm, respectively. Suspensions with weight concentration of 0.06 wt% were prepared as test fluids using ion-exchanged water and acrylic polydisperse particles with average diameters of 7 μm, 10 μm and 20 μm, respectively. For the 7 μm particles, none of the models provided sufficiently high classification, although 400c showed a high concentration effect. The high concentration was possibly caused by the balance of extremely high centrifugal acceleration and a weak Dean vortex that enhances mixing and redispersion of concentrated particles near the outer wall. For the 10 μm and 20 μm particles, 400b always showed better performance than 400a because of the higher centrifugal acceleration in 400b and similar Dean vortex intensities. It is concluded, based on these results, that the channel depth is one of main factors that influence the performance of the micro-separator/classifier.

Journal

Citations (2)*help

See more

References(13)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top